Improving Backend Application Performance - Basics

If you have done a performance test,
This time, we should try to improve performance, right?

As promised in the last performance testing lecture, we're back with a performance improvement lecture 🤗

The biggest change I've experienced since I started working in a team, as opposed to when I was developing alone, is measuring and improving performance. When I was developing applications on my own, the small number of users meant performance wasn't a major issue. However, as we process more data and traffic increases, I've realized that performance testing is essential . Even if a feature works well, poor performance can easily become a point of failure for the entire system, significantly impacting the user experience.

This lecture covers performance testing to address these issues and how to improve the API's logic accordingly . Using a shortened URL service as an example, we've prepared an easy-to-understand method for gradually improving the performance of your backend application.

First, we'll examine the basic code of the shortened URL application and deploy it to a server. We'll measure the performance of the creation and query APIs, explore potential performance improvements, and implement performance improvement methods one by one.

For the generation API, performance can be improved by increasing the number of request processing threads, increasing the server size, and separating response and generation. Learn how asynchronous processing and the snowflake algorithm can significantly improve the performance of the generation API.

To improve the performance of the query API, we'll cover methods such as adding database indexes, utilizing caches, and leveraging windowing. Through hands-on practice, you'll learn how to significantly improve query performance.

Analyze API-specific logic to derive performance improvement measures.

Eliminate duplicate URL key check logic using Snowflake

Presenting step-by-step performance improvement plans and confirming performance test results

Learn about these things

Things to note before taking the course